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<?php

/**
 * This file is part of the ramsey/uuid library
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 *
 * @copyright Copyright (c) Ben Ramsey <ben@benramsey.com>
 * @license http://opensource.org/licenses/MIT MIT
 */

declare(strict_types=1);

namespace Ramsey\Uuid\Generator;

use Ramsey\Uuid\Exception\NameException;
use Ramsey\Uuid\UuidInterface;

use function sprintf;
use function uuid_generate_md5;
use function uuid_generate_sha1;
use function uuid_parse;

/**
 * PeclUuidNameGenerator generates strings of binary data from a namespace and a
 * name, using ext-uuid
 *
 * @link https://pecl.php.net/package/uuid ext-uuid
 */
class PeclUuidNameGenerator implements NameGeneratorInterface
{
    /** @psalm-pure */
    public function generate(UuidInterface $ns, string $name, string $hashAlgorithm): string
    {
        $uuid = match ($hashAlgorithm) {
            'md5' => uuid_generate_md5($ns->toString(), $name),
            'sha1' => uuid_generate_sha1($ns->toString(), $name),
            default => throw new NameException(
                sprintf(
                    'Unable to hash namespace and name with algorithm \'%s\'',
                    $hashAlgorithm
                )
            ),
        };

        return uuid_parse($uuid);
    }
}